Rotary Wellpoint Pumps

PRODUCTS > Rotary Wellpoint Pumps

The original Thompson rotary wellpoint pump has been trusted by contractors worldwide for more than 50 years.

Thompson’s pumps are specifically designed and engineered for construction wellpoint and sock dewatering with high air handling, large water volume and high vacuum capability.

With 8-inch and 12-inch rotary pump sizes that handle both air and water, the positive displacement with constant suction makes this pump ideal for all wellpoint applications.



The Thompson rotary pump produces constant suction as the rotors separate. The liquid is directed around the rotors and out the discharge. The polyurethane rotors and the stainless-steel wear plates offer corrosion resistance while the steel inserts provide strength and durability.


  • Flows up to 2,200 gpm
  • Discharge heads up to 120 feet
  • Suction lift up to 28 feet
  • High air handling capabilities up to 400 cfm
  • 200-gallon fuel tank
  • Excess fuel cell allows 72+ hours of operating capability
  • High-efficiency design providing low fuel consumption
  • Positive displacement with constant suction for pumping high water volumes and maintaining high vacuum at low engine speeds
  • Oil-lubricated mechanical seals
  • Polyurethane rotors and stainless-steel wear plates for long-life operation
  • 12-month limited warranty covers manufacturing defects in materials and workmanship


Consult factory for other versions & options.

Unit Model Size (In.) Max Head (Ft.) Max Capacity (GPM) Max Solids (In.)
8RW 8 120 1300 Filtered Water Only
12R 12 120 2200 Filtered Water Only


Silent Knight®
Sound-attenuated canopy reduces pump sound levels to or below 69 dBA. Fully insulated, weather-proof and lockable, the Arctic Night® variation is ideal for extremely cold temperatures.